BASE STATION APPARATUS, MOBILE TERMINAL APPARATUS, MOBILE COMMUNICATION SYSTEM, AND INFORMATION RETRANSMISSION METHOD

摘要

Even if a system bandwidth is expanded, transport signals can be effectively retransmitted with the degradation of retransmission efficiency suppressed.  A mobile communication system includes a base station apparatus (20) and a mobile terminal apparatus (10).  The base station apparatus (20) divides, by use of a retransmission block dividing unit (21), a transport signal into retransmission blocks in accordance with a retransmission block table that includes registrations of the numbers of retransmission blocks that are required according to the numbers of transmission antennas and the system bandwidths if the maximum value of sizes of retransmission blocks, which are retransmission units for transport signals, is fixed to a certain value.  The base station apparatus (20) then retransmits the transport signal corresponding to the divided retransmission blocks via a downlink.  The mobile terminal apparatus (10) receives, from the base station apparatus (20), the transport signal corresponding to the retransmission blocks, and combines the retransmission blocks to reconstruct the transport signal before division.